# gemini-1.5-flash-8b-001

Calls to the model gemini-1.5-flash-8b-001 stopped working on September 29, 2025.

## The error Gemini API returns once gemini-1.5-flash-8b-001 is gone

Once it is closed to new API keys: HTTP 404

```json
{"error":{"code":404,"message":"This model models/gemini-1.5-flash-8b-001 is no longer available to new users. Please update your code to use a newer model for the latest features and improvements.","status":"NOT_FOUND"}}
```

Once it is shut down: HTTP 404

```json
{"error":{"code":404,"message":"models/gemini-1.5-flash-8b-001 is not found for API version v1beta, or is not supported for generateContent. Call ModelService.ListModels to see the list of available models and their supported methods.","status":"NOT_FOUND"}}
```

## What to use instead

Move to gemini-3.5-flash-lite. Our suggestion, not Google's: the release notes that record the shutdown name no successor. Flash-Lite is the tier that took over the small, cheap slot after 1.5.

- API: Gemini API (generativelanguage.googleapis.com)
- Model: gemini-1.5-flash-8b-001
- Kind: Model retirement
- Takes effect: September 29, 2025
- Calls after that day: fail
- Calls it hits: `model gemini-1.5-flash-8b-001`
- Source: [models.dev](https://modeldeprecations.dev/api/v1/models.json?provider=google)
- Verified: November 6, 2026, against Gemini API's own pages
- Page: https://www.okapi.bot/models/gemini-api/gemini-1.5-flash-8b-001/

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent